mirror of
https://github.com/triqs/dft_tools
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161 lines
6.8 KiB
C++
161 lines
6.8 KiB
C++
/*******************************************************************************
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*
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* TRIQS: a Toolbox for Research in Interacting Quantum Systems
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*
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* Copyright (C) 2011 by O. Parcollet
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*
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* TRIQS is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* TRIQS. If not, see <http://www.gnu.org/licenses/>.
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*
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******************************************************************************/
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#ifndef TRIQS_ARRAYS_HDF5_ARRAY_PROXY_IMPL_H
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#define TRIQS_ARRAYS_HDF5_ARRAY_PROXY_IMPL_H
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//#define TRIQS_ARRAYS_DEBUG_H5_SLICE
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#include "../indexmaps/cuboid/domain.hpp"
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#include "./group_or_file.hpp"
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#include "../impl/sliceable_object.hpp"
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#include "../impl/tuple_tools.hpp"
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#include <boost/shared_ptr.hpp>
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#include <boost/make_shared.hpp>
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namespace triqs { namespace arrays {
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namespace h5 { template<int Rf> struct array_proxy_option {}; }
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namespace Option {
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template<class IM2, int Rf> struct Im_Opt_2_Opt<IM2, h5::array_proxy_option<Rf> > { typedef h5::array_proxy_option<Rf> type;};
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}
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namespace h5 {
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template<int Rank, int Rank_full>
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class index_system {
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public :
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static const unsigned int rank= Rank, rank_full = Rank_full;
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typedef mini_vector<size_t, Rank> v_type;
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typedef mini_vector<size_t, Rank_full> v_type_full;
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typedef indexmaps::cuboid::domain<Rank> domain_type;
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domain_type const & domain() const { return mydomain;}
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index_system (v_type_full const & total_lengths_) {
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total_lens_ = total_lengths_; lens_= total_lengths_;
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for (size_t i =0; i<rank_full; ++i) stri_[i] = 1;
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for (size_t i =0; i<rank; ++i) dims[i] = lens_[i];
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mydomain = domain_type (dims);
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}
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index_system (v_type const & dims_, v_type_full const & total_lengths_, v_type_full const & lengths_,
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v_type_full const & strides_, v_type_full const & offset_ ) {
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dims = dims_;total_lens_ = total_lengths_; lens_= lengths_; stri_ = strides_; off_=offset_;
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mydomain = domain_type (dims);
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}
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index_system (DataSpace const & ds, bool is_complex) {
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int rf = ds.getSimpleExtentNdims();
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if ( rf != rank_full + (is_complex ? 1 : 0) ) TRIQS_RUNTIME_ERROR << "H5 : dimension error";
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//int ndims = ds.getSimpleExtentDims( &lens_[0], NULL);
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ds.getSimpleExtentDims( &lens_[0], NULL);
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for (size_t i =0; i<rank; ++i) { dims[i] = lens_[i]; stri_[i] = 1; off_[i]= 0; }
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total_lens_=dims;
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mydomain = domain_type (dims);
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}
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template<bool C> DataSpace dataspace() const { return h5::dataspace_from_LS<rank_full,C> (total_lens_, lens_,stri_,off_); }
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size_t size() const { size_t _size = 1; for (size_t i =0; i<rank; ++i) _size *= lens_[i]; return _size;}
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mini_vector<size_t, rank_full> total_lengths() const { return this->total_lens_;}
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mini_vector<size_t, rank_full> lengths() const { return this->lens_;}
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mini_vector<size_t, rank_full> strides() const { return this->stri_;}
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private:
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mini_vector<hsize_t,rank_full> lens_, off_, stri_;
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v_type dims;
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v_type_full total_lens_;
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domain_type mydomain;
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};
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namespace slicer_impl {
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template <bool BC> inline void _check_BC ( int N, int ind, size_t B) { }
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template <> inline void _check_BC<true> (int N, int ind, size_t B) {
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bool cond = (ind >= 0) && (ind < int(B)); // fix this int ...
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if (!cond) TRIQS_ARRAYS_KEY_ERROR << " index "<<N<<" is out of domain: \n " << ind <<" is not within [0,"<< B <<"[\n";
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}
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template<int Rank_in, int Rank_out, int N,int P, int c, bool BoundCheck> struct slice_calc {
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typedef mini_vector<size_t,Rank_in> const & i_type;
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typedef mini_vector<size_t,Rank_in > & o_type;
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typedef mini_vector<size_t,Rank_out > & os_type;
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template< typename ArgsTuple>
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static void invoke(i_type li, i_type si, os_type lo_c, o_type lo, o_type so, o_type offset, ArgsTuple const & args ) {
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const int dP = boost::is_base_of<typename boost::tuples::element<N,ArgsTuple>::type, range >::type::value ;
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one_step(li[N], si[N],lo[N],so[N], offset[N] ,boost::tuples::get<N>(args));
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lo_c[P] = lo[N];
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slice_calc<Rank_in,Rank_out,N+1,P+dP,c-1, BoundCheck>::invoke(li,si,lo_c,lo,so, offset, args);
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}
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static void one_step(size_t li, size_t si, size_t & lo, size_t & so, size_t & offset, size_t R){
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_check_BC <BoundCheck> (N, R, li);
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offset = R; lo =1; so= 1;
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}
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static void one_step(size_t li, size_t si, size_t & lo, size_t & so, size_t & offset, range R){
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_check_BC <BoundCheck> (N, R.first(),li);
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_check_BC <BoundCheck> (N, (R.last()==-1 ? li : R.last()) -1 ,li);
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lo = ((R.last()==-1 ? li : R.last()) - R.first() + R.step()-1 )/R.step() ; // python behaviour
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so = R.step(); offset = R.first() ;
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}
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};
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// stop the recursion
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template<int Ri, int Ro, int N, int P, bool BC> struct slice_calc <Ri,Ro,N,P,0,BC> : slice_calc<Ri,Ro,N,P,1,BC> {
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template<class T1,class T2,class T3,class T4,class T5,class T6, class T7> static void invoke(T1,T2,T3,T4,T5,T6,T7 ) {}
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};
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}//namespace slicer_impl
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} // h5
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namespace indexmaps {
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template<int R, int Rf, typename ArgsTuple>
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struct slicer < h5::index_system<R,Rf>, ArgsTuple> {
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static const unsigned int len = boost::tuples::length<ArgsTuple>::value;
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static_assert(len>=R, "Too few arguments in slice");
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static_assert(len<=R, "Too many arguments in slice");
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static_assert( (R==Rf), "Can not slice array_proxy twice (not implemented)");
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static const unsigned int R2 = R - TupleTools::CountHowManyInt<ArgsTuple>::value;
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typedef h5::index_system< R2, Rf> return_type;
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static return_type invoke ( h5::index_system<R,R> const & X, ArgsTuple args) {
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mini_vector<size_t, R2> newdims;
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mini_vector<size_t,R> newoffset, newlengths, newstrides;
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h5::slicer_impl::slice_calc<R,R2,0,0,R,true>::invoke(X.lengths(),X.strides(),newdims, newlengths,newstrides, newoffset, args);
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#ifdef TRIQS_ARRAYS_DEBUG_H5_SLICE
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std::cerr<<"-----------------------------------------------"<<std::endl;
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std::cerr<<"H5 Slicing "<< X.lengths().to_string()<<X.strides().to_string()<<newlengths.to_string()<<newstrides.to_string()<< newoffset.to_string() << args<<std::endl;
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#endif
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return return_type(newdims,X.total_lengths(), newlengths,newstrides,newoffset);
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};
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};
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template<int R, int Rf> struct slicer < h5::index_system<R,Rf>, boost::tuple<> > { typedef h5::index_system< R,Rf> return_type;};
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}
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}}
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#endif
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